这里为什么用good manners 而不用a good manner?
before entering a house in some Asian countries,it is good manners to take off your shoes.
人气：486 ℃ 时间：2020-01-30 16:43:12
解答
manners :礼貌,常用复数.
用单数则表示“方法”、“方式”（与介词in并用）.如：You should handle the problem in a careful manner.
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